Tumbling machine



A. ENSSLIN M ay 19,1931.

TUMBLIYNG MACHINE Filed Sept. 29, 1928 7 Sheets-Sheet l May 19, 1931. A. ENssLirN 1,806,194

TUMBLING MACHINE Filed Sept. 29, 1928 '7 Sheets-Sheet 2 K n sg Filed Sept. 29, 1928 7 Sheets-Sheet 3 May A19, 1931- ENssLlN' 4 1,806,194 TUMBLING MACHINE Filed Sept. 29, 1928 7 Sheets-Sheet 4 A. ENSSLI N TUMBLING MACHINE 4Mayl?, 1931.

Filed Sept. 29, 1928 '7 Sheets-Sheet 5 P i I. VJ l llr!! .um nmwwm w k A u f W hw mx i kann.. RMN i, M2 j M NQ GQ m. MQ

May 19, 1931. A. ENSsLl-N TUMBLING MAcHINE Filed Sept. 29, 1928 7 Sheets-Sheet 6 May 19, 1931- A. ENssLlN 1,806,194

TUMBLING MACHINE Filed Sept. 29, 1928 7 Sheets-Sheet7 www@ . Patented May 19, 1931 PATENT .cr-rice .ADOLF EINTSSIICTIII',l 0F` NOR-TH ATTLE-BORO, MSSACHUSETTS TUMBLING treni-TINE Application led September 29, 1928. Serial No. 309,295.

y My invention relates to machines wherein a rotary receptaclel containing shot or other abrasive elements are employed for polishing articles of various shapes.

u; i Heretofore barrels or like receptacles'have been used for this purpose with little or no success upon articles having extended plane areas, such as plates or disks, both because the substantially circular transverse curvature of 1@ the barrel caused the articles to bridge large areas of the barrel, thus excluding the abrad- Y ing elementsfrom one side of the plate and wasting space, and because articles having Hat surfaces, adhered to the barrel ends. rlhis was true regardless of whether the interior of the barrel was ribbed or grooved.

011e essential object of my invention is to overcome the deficiencies above set forth.

Other essential objects are toV preventfracture of the receptacle; to insure that any interruption of therotation of the receptacle shall occur only when the portion thereof containing the supply orifice is uppermost, to lock the receptacle against assuming a posi'- tion wherein the orifice is either uppermost or lowermost; and to afford a convenient, easily operable, and tight closure adapted to eliminate strain upon the receptacle. Other objects and advantages will be ap- 80 parent to those skilled in the art from an inspection of the specification herein.

To the above ends primarily my invention consists in such parts and in such combinations of parts as fall within thescope of the appended claims. y In the accompanying drawings which form a part of this specification,

Figures l, 2, and 3, are a topI plan view, a front elevation, and an end elevation respec- V 410 tively of a tumbling machine embodying Vmy invention,

Figure 4, a transverse section on line 4 4 of Figure l,

Figure 4, a section on line 421.--4a of 'Fig- Figure 5, a longitudinal section of thereceptacle, ,l

Figure 5a, a fragmentary elevation of a portion of the cover viewed in the direction of the arrow shown in Figure 5,

`from any convenient source of power.

Figure 6, a fragmentaryv front elevation of the machine partially in vertical central section,

Figures 7 and 8, transverse sections taken on line 7 7 of Figure 6, showing the lever in ngaged and disengaged positions respective- Figure 9, a section taken on line 9 9 of Figure l showing the locking bail in unlocked position,

Figures 10 and 11, sections taken on line 10-10 of Figure 2 showing the bail in locked and unlocked positions respectively, and

Figure l2, a section taken on line 12-12 of Figure 10. 6 5

Like reference characters indicate like parts throughout the views.-

As herein illustrated the frame of my machine includes a base 18 comprising a front portion 19 and a rearwardly extending end portion 20.. The top of the former is provided with an inclinedv portion 21. Screwed or otherwise fixed to the front portion of the base are a plurality of standards or supports 22 and 23, in this case two in number. The standard 22 is provided with bearings 24 and 25, and the standard 23 with a bearing 26, the former two bearings for a driven shaft 28, and the latter for a trunnion 29. Screwed to the portion 2O of the base are standards or supports 30 having bearings 3l for a driving shaft 33 fast to which is a pulley 35 actuatei sprocket chain 87 engages a sprocket wheel 38 fixed to the driving shaft and a similar wheel 39 fast to an intermediate or main shaft 40, whereby the latter is driven. A sprocket wheel 44 also fixed to the shaft 40 rotates the driven shaft 28 through connections hereinafter set forth.v

A carrier 46 for the tumbling receptacle 47 includes a rectangular frame 48 having flat ends 49'and fiat sides 50 yintegral with the latter. The ends have each a longitudinally disposed inwardly directed abutment portion 51. Centrally of the frame ends 49 and extendi-ng through the abutment portions aie openy ings 52 see Figure 5 in alignment with which are outwardly directed collars or hubs 5K3 integral with the ends. rllhe hubs are fixed by by a projecting annular neck or fla screws or otherwise to the shaft`28 and to the trunnion 29. The upper and lower faces of each abutmentportion is provided with a longitudinal groove 57 forming in each case a vertical shoulder 58. Attached to the upper and lower portions of the. traine end portions 51 are upper and lower substantially segmental plates 60 and 61 respectively, all provided with inwardly directed undulating peripheral llanges 63. Each of the upper and lower plates has integral with its plane edge, throughout the length thereof, an oii'set angular flange comprising an outwardly directed horizontal portion 66 and al terminal portion 67 disposed at right angles to the portion 66. The ilange portions 67 of the upper plates 60 are downwardly directed and rest in the upper grooves 57 and abut against the'adjacent shoulders 58, while the flange portions 66thereof are slightly spaced from the shoulderedor elevated portions 58 of theabutinent portions 51. rIhe flange portions 67 are slightly narrower than the width of the grooves 5.7, as at 68. Thellange portions 67 of the lower plates 61 are upwardly directed and register in the lower grooves 57 and abut against the lower shoulders 58. The plates 61 are rigidly attached tothe ends of the frame by a plurality of screws 69 engaging in threaded holes 7.1 in .the lower flange portions 66;.and in threadedcavities 72 in the lower abutment portions 5l of the frame ends. The .upper plates 60 are attached to the traine ends as follows. A pluralityot tensioned binding screws 75 have heads 76 and extended Shanks 77. The latter engage in holes'79 or" the upper llange portions 66 and in threaded cavities 80 'inthe' upper abutment portions` 510i the 'frame ends'. A helical'spring 81 surrounds the shank of each screw 75 with its lower Vend resting Von the .flange portion 66, and its 'upper end abutting` the screw head.

The receptacle 47 is hollow and is embraced f by the Vflanges 63 of the end'plates 60 and 6,1. It is composed entirely of glass and in detail comprises an undulatory boldypor'- tion 83 comprising annularly arranged 'longitudinally vdisposed waves' or undulations 84. `lts end portions 85 are also undulatogry comprising radially disposed flaring undulations 86. Intermediate its length thetop of the body port-ion of the receptacle Vis provided with a inouth or .opening v87 formed vtion 8,8 provided with a beadh89. 'A6 losure or cover 90 forthe mouth 87 com prisesa circular base plate 912i provided in its `under side with an annular recess 93 for the reception of a gaslet 94 adapted to rest upon the neck 88, and held by the overlapping margin of a retaining plate 9 5 flied by screws 96 to the plate 92. 'Integral'with the top of the latter is a rectangular housing block 97 see Figure 3 provided lwith. la centending guide flanges 104 integral with the periphery of the base plate 92 forming guideways continuous with theguideways formed by the wing walls 103. Rocking levers 106 are pivoted intermediate their lengths upon pins 107 in each pair of guide walls 103. The 'levers `have'reduced inner end portions 108 extending ,into the Abore 98 ofthe .block;97,

and reduced outer ,ends Y'109 ,projecting through holes 110 in vertically slidableplate 111 mounted in the guide flanges 104. "Near .their lover ends. are' .horizont-al Slots .112 forming lhooks 113. An operatingscrew 115 an unthreaded `portion received in an lopening 116 ina retaining plate 1 17 liXedtlo 1the OIJO the` lOlQCk f9,7 by screws 118. The operating screw has a head 120, an enlarged intermediate portion l121 and a reducedlow.- .er ,portion l1622 provided y,respectively with .threads i123 iand 124 l,of different pitches. Upon the screw portion 121 is mounted a nut 126 whose thread corresponds in pitch withthethread 123. A Inut 1 28 onthe screw portitin 122 has athread corresponding in pitch with the thread '124. The nuts 126 `,and 128 have *each kfour radial fins 129 land 130 vrespectively slidable `the 'slots -99 of the block. Helical springs 1 321in the cavities 100 enclose lthe'lower'efnds of .guide pins 134 vvslidalo'lce in vertical holes 135 inenlarged por.- vOIlS 13.7 0f .the Drawings 12.9 se@ .Fiamma and the ,tops of the springs abut against :the bottoms ,of the ,enlarged'portions while the headed lower ends 139 of the pins 134 rest upon the en ``Vs 108 of the levers which in turn rest upon tlc fins or wings of ,the vnut 128. A hand lever 141 is fixed in the head of the Lfliperating screw 115, and a washer 143 Kupon 7the ,upper portion of the screw abuts against the lreta'ining plate. A bland 1145 'embracing the neck 88 of the rees tad@ isV clamped thereon 'by means Aof a tigh 'ening screvsr 146 connecting yend lugs l14,7 upon the band. AFour screws' or pins 148 spaced a quarter circtnnlference .upon theV bland .are adapted to be'slidahly receivedin the hook lQltons 11,3 iof the vertical plates ,1 11.

The meanshor actuating the shaft -28D which armes. .the receptacle. mande a sprhcket chain 150 which engages the sprocket wheel 44.0nthe shaft 4Q, and* a lilre wheel 151 whose'hub portionA 152: is free on the shaft28'and ,is proyideidin its operative face with a radial slot 153. Adjacent this mem.-

ber upon the shaft 28 is ,the silidable sleevelvl roe of a clutch device provided in `one end face v with an inclined shoulder 156 and flat radial lug 157 adapted to register in the slot 153, but of as much greater length than the depth of the slot-as to equal the height of the cam shoulder 156. The opposite end of the sleeve 154 is provided with a diametrical slot 159 and with a cavity 160. The nonslidable member of the clutch device includes a collar 162 provided upon one end face with a cavity 164, and with lugs 165 adapted to slidably enter the slot 159, A guide pin 167 is surrounded by a helical spring 168 having its ends seated in the cavities 160 and 164. The collar, 162, located beside the bearing 24, has an internal thread 169 engaging an external thread 170 upon a reduced endportion 171 of a second collar 172 of which it is a constituent part. The collar 17 2 is loose in both the bearing 24 and upon the shaft 28 which has an end portion 174 of enlarged diameter rotatable in the central bore 176 of aA locking head 177 upon the collar 172 abutting against the outer end of the bearing 24 and extending therefrom. The head 177 is transversely U shaped and its upper and side portions are cut away to form an arched recess 179. Extending transversely through the lower portion of the head is a cylindrical bore 181 which is in alignment with a transverse peripheral semicylindrical groove 182 in the enlarged portion 174 of the shaft 28 when the latter has reached a certain point in its rotation. If the peripheral portion of the shaft 28 closest to the receptacle mouth 87 be regarded as the top of the shaft, the groove 182 is upon the bottom of the shaft. Rotatably mounted in the bore 181 is a cylindrical locking pin 183 with a central longitudinally disposed arcuate recess 184 in its periphery.

Fast to the outer ends of the pin is a bail 186 which is, in this instance, assisted in maintaining either an upright or` a depending position, as shown in Figure 12, by a pin 188 slidable in a recess 189 in the member 188 and pressed by a spring 191 therein to register with diametrically oppositely disposed cavities 192 and 193 in the head 177. It will be observed that when the bail 186 is manually raised to position shown in Figures 10 and 6 the solid portion of the pin 183 is in the cavity 182, and the shaft 28 is thus interlocked with the collars 172 and 162, which is normal running position; but when the bail is in the depending position shown in Figures 9 and 11, the recess 184 is presented to the enlarged portion 174 of the shaft 28, so that the latter rotates freely without moving the sleeves. In the clutch operation t-he spring 168 forces the lug 157 of the sleeve 154 into the slot 153 of the hub 152 of the sprocket wheel 151, as shown in Figure 6, which is the running position of the machine, wherein the chain 150 from the sprocket 44 on the shaft 40 drives the shaft 28 through the inter-engaged members 152,154,162, 172, and isa.

lVhen, however, itis desired to interrupt the rotation of the shaft 28 the following means is employed. 'As shown in Figures 7 and 8, a flat upright lever 196 having a fiat upper end is pivoted intermediate its length upon a pin 198 in intermediate portions 4of vertical parallel lugs 199 projecting from the front of the standard 22. This lever has its lower portion beveled as at 200. A second or auxiliary flat lever 201'slidably engages the lever 196 and is likewise pivoted intermediate its ends upon the pin 198, and has its lower portion beveled, as at 202. It is provided near its top with a rectangular lateral recess 203 at a point above the vend of the lever 196 whereby is formed a hook or beak 204 above the first lever and parallel with its top edge. A stop pin 206 in the upper portion of the lever 201 bears against' the y front edge of the lever 196. Integral with the standard 22 is a rearwardly directed boss or extension 208 provided with horizontal bores 210 and 211 spaced from each other and eX- tending to the front face of the standard. Reduced portions 212 and 213 of these bores respectively extend to the rear face ofthe boss. A plunger 214 in the bore 210 has a head 215 pressed against the lower portion of the lever 196 by a helical spring 216 having one end abutting against the head and its other end abutting against a shoulder 217 formed by the bore portions. A plunger 218 in the bore 211 engages with its forward end the lower portion of the arm 201 andl is forwardly pressed by an expansion spring 220 having its front end fixed to an intermediate portion of the plunger, and its other end abutting against the internal shoulder 222. The levers are controlled by a hand lever comprising a handle arm 224 and an angular cam 225 pivoted on a pin 226 in the lower portions of the lugs 199. In this instance a web-228 connecting the lower ends of the lugs 199 forms a rest for the hand lever. The

lower front edge of the lever v196 is maintained in contact with the cam 225 by the plunger 214; and the pin 206 of the lever 201 is pressed against the lever 196 by plunger 218. When one cam face, 230, is engaged by the lever 196 the latter is in inactive position, as shown in Figure 7. Vhen the second cam face 231 is engaged by the lever 196, as shown in Figure 8, the latter is in operating position. That is to say when the lever arm 224 is manually depressed the spring 216 -is permitted to force the upper portion of the lever 196 into the path of the cam shoulder 156 upon the clutch member 154, whereby the latter is forced towards the member 162, thus withdrawing the lug 157 from its seat 153, and throwing out the clutch and stopping the machine. As the clutch controlling arm 196 is impelled into engagement as described, the lever 201 advances therewith bringing the hook 204 into the path of the lug 157 so that the beak 204 snaps over the lug and cooperates with the top of the lever 196,. as shown` in Figure 7, to hold the lug in horizontal position, whereby the mouth of the receptacle 87 stops and remains' stationary in its uppermost position.

ln operating my device the cover 90, which' is shown in clamped and unclamped positions respectively in Figures 1 and 5, is' removed. his is effected by turning down the screw 115 l by the hand lever 14:1 whereby the pressure of the springs 132 upon the clamping levers 106' is lessened, and the upward tension of the clamping plate hooks 113 upon the pins 148 thereby relieved. The cover 89 is now manually turned slightly to disengage the pins from the hooks. Since the receptacle neck is of glass the yielding character of the clamping means prevents accidental fracture of the former.

Aft-er the removal of the cover 90 the abrasive elements and the plates or other articles to be treated thereby are introduced into thel receptacle through the mouth 87, the receptacle being maintained in upright position for this purpose by the engagement of the levers 196 and 201 with the clutch lug 157. 'lhe cover is neXtreplaced.

The lever handle 224 is next manually elevated to free the clutch and permit the rotation of the receptacle and shaft 28 from the pulley 35, chain 37, shaft 10, chain 150 and the described clutch connections.

When it is desired to dump the receptacle the lever handle 224 is pressed, and the rotation of the receptacle stopped and the cover may be removed, but, by reason of the engagement of the locking lever 201 with the clutch lug 157, the mouth of the receptacle is in upright position. To obviate this difculty the bail 185 of the locking pin 183 is manu ally turned fromv its upright to its depending position which permits the shaft 286 to rotate freely and independently of the clutch elements and their connections. Thus the receptacle may be manually and by gravity turned or reversed and the contents thereof be withdrawn or be dumped upon the inclined portion 21 of the base portion 19.

The main shaft 4() may be extended in length by couplings to any extent convenient for transmitting power to a gang or plurality of the described machines.

It will be observed that by virtue of the nndulatory character of both the body portion and ends of the tubbing receptacle tha flat articles may be polished on both sides, because their flat faces cannot anywhere find any corresponding flat area upon the receptacle to which to adhere. Also large iiat articles may be herein treated because the undulatory form of the receptacle compels tilt-V n ing ofthe article.

The character of the framework carrying the receptacle is such as to permit the latter to be constructed of glass; since, among other things the upper retaining plates are engaged to the adjacent frame portions by clamping screws cushioned by springs 81. The nonrigid character of engagement of the cover to the glass neck ofthe receptacle also insures against fracture.

-t is understood that the details of the construction may be varied, and l do not purpose limiting the patent gran-ted on this applica. tion otherwise than necessitated by the prior art. v Y

I claim 1. In `a tumbling machine, a driving shaft, a driven shaft, a carrier-comprising a frame fast at one end to the driven shaft, segmental clamping plates rigid with the ends o-f the frame projecting in one direction, segmental clamping plates disposed oppositely to the first plates, laterally projecting longitudinal shoulders upon the noncurved edges of the second plates provided with holes, clamping screws in the frame passing through the holes projecting above the shoulders, heads upon the screws, springs upon the screws with their ends pressing against` the heads and the shoulders, and peripheral retaining fianges upon all the plates, and a container embraced by all the flanges.

il. A structure in accordance with claim 1 embodying a container and in which the driven shaft is provided with a groove in a vertical plane parallel with the plane passing` through the receptacle mouth and the axis of the driven shaft, a partially rotatable locking member movable into and out of said groove to lock or release the collar from the driven shaft, Vand means for operating the locking member In testimony whereof I have affixed my signature.

ADOLF ENSSLIN.

` ies 

